X. Perpiñà, J. León, J. Altet, M. Vellvehi, F. Reverter, E. Barajas, and X. Jordà Applied Physic Letters, 110, 094101 (2017) With thermal phase lag measurements, current paths are tracked in a Class A radio frequency (RF) power amplifier at 2 GHz. The amplifier is heterodynally driven at 440MHz and 2 GHz,...
